.parent {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(3, 1fr);
    grid-column-gap: 0px;
    grid-row-gap: 0px;
    height: 100%;
    width: 100%;
    position: absolute;
}

.parent2 {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(4, 1fr);
    grid-column-gap: 0px;
    grid-row-gap: 0px;
    height: 93%;
    width: 100%;
    position: absolute;
}

.div1 { grid-area: 1 / 1 / 2 / 2; }
.div2 { grid-area: 1 / 2 / 2 / 3; }
.div3 { grid-area: 1 / 3 / 2 / 4; }
.div4 { grid-area: 1 / 4 / 2 / 5; }
.div5 { grid-area: 1 / 5 / 2 / 6; }
.div6 { grid-area: 2 / 1 / 3 / 2; }
.div7 { grid-area: 2 / 2 / 3 / 3; }
.div8 { grid-area: 2 / 3 / 3 / 4; }
.div9 { grid-area: 2 / 4 / 3 / 5; }
.div10 { grid-area: 2 / 5 / 3 / 6; }
.div11 { grid-area: 3 / 1 / 4 / 2; }
.div12 { grid-area: 3 / 2 / 4 / 3; }
.div13 { grid-area: 3 / 3 / 4 / 4; }
.div14 { grid-area: 3 / 4 / 4 / 5; }
.div15 { grid-area: 3 / 5 / 4 / 6; }

